MT#6359 Properly idenfity lcr_gw by id.

Since allowing duplicate ips in peering servers, we need to
identify the peers using the kamailio.lcr_gw.flags column, which
is actually provisioning.voip_peer_hosts.id, instead of trying to
match on the ip address.

db_scripts/diff/15053.up

@@ -0,0 +1,17 @@
+USE provisioning;
+
+DROP TRIGGER voip_phost_drepl_trig;
+DELIMITER ;;
+
+CREATE TRIGGER voip_phost_drepl_trig AFTER DELETE ON voip_peer_hosts
+  FOR EACH ROW BEGIN
+
+  DELETE FROM kamailio.lcr_gw
+    WHERE flags <=> OLD.id;
+
+  DELETE FROM kamailio.peer_preferences
+    WHERE uuid = OLD.id;
+
+END ;;
+
+DELIMITER ;